Formula Sounds

DN78-II 2018

DJ Mixer

Main Details
Maker Formula Sounds Company Superstereo Brand
Additional Model ID DN78LXADB
Signal Path Analog Hardware
Made In United Kingdom
Date Produced 2018
Dimensions 340 x 100 x 240mm (W x H x D)
Weight 3.3 kg
Notes The New DN78 Phantom Valve is a desktop analogue DJ mixer featuring 2 dual input channels, one mono mic channel, 2 stereo USB channels and features rotary faders and a rotary cross-fader.

The mixer is designed to the highest audio standard featuring a valve stage giving extra warmth and depth to the sound and is designed for professional DJ’s, clubs and venues. It is laden with many features to enhance the DJ’s performance and sound.

DN78 –II 2018 edition:
New 2 stage RIAA phono pre-amp with +/- 0.5 db from RIAA curve.
4 position capacitance switches for phono cartridge loading.
New high quality mic pre-amp with additional stereo line in via XLR Combo Jack
Improved valve circuitry giving more accurate spacial sound and more drive.
Improved cooler running power supply
New channel EQ’s with nicer eq’ frequencys and cuts.
Updated Isolator with reduced boost and no crosstalk on cut.
Updated internal wiring for greater relaiblity.
Valve bypass switch on the front panel.
Boosted master output with up to +24db @ 0.01% THD (valve bypassed – 0.3% with valve)
Made by Formula Sound

Features of the DN78 Phantom Valve Series:
A rotary cross-fader between CH1 + CH2.
5 LED input monitor VU meter for each channel.
Input gain control giving up to 5 x gain.
A headphone cross-fader control between the output and cue channel.
Push button PFL cue controls
2 channel stereo mixer
Valve (tube) output stage,
3 band ‘Isolator’ on the output,
3 band EQ control on each channel,
RCA and XLR balanced output level (booth & main outs),
2 line & 2 phono RCA inputs,
4 channel USB Audio ( 32bit/384kHz out),
Precision Backlit VU meters (output),
LED Clip indicator,
Cue indicator,
Stereo Fx send & return,
High power headphone output,
High quality Alps ‘Blue Velvet’ faders,
Audiophile grade op-amps,
High grade toggle switches & knobs,
Wooden side panels.

Technical Specifications:
PHONO STAGE: RIAA 47kohm, S/N 102dB 3 to 100mV. 300pf, Moving Magnetic pick up. MC switch optional – 100 – 300 uV – 300pf. Standard RIAA curve. Switchable to line inputs.
LINE IN: >47k ohm -10 to +15dBu. S/N 104dB
USB AUDIO: 32 bit @ upto 384khz. 2 x 2 In. S/N <112 dB D/R. Win & MacOSx – NO drivers needed for Apple Mac
MIC INPUT: >600 ohm, -47dB to -10dB. Gain +60dB
MIX OUT: (XLR) Servo Balanced XLR male >600 ohm +4dBu.
BOOTH OUT: (XLR) Servo Balanced XLR male >600 ohm +4dBu
MIX OUT & BOOTH OUT: Unbalanced, RCA. 0dB 47 ohm
MAX OUTPUT LEVEL: (XLR) Booth and Master. +24dB.
MAX OUTPUT LEVEL: (RCA) Booth and Master. +20dB

EFFECTS SEND: 47K ohm, +18dB. Stereo TRS, Tip L, Ring R.
EFFECTS RETURN: 4.7K ohm, -20dB to +20dB. Stereo TRS. Tip L, ring R.
ISOLATOR: LOW 0-280Hz, MID 260Hz – 2K, HIGH 2K – 20k (12db/octave) -inf. to +8dB. Flat at centre/Bypass
FREQUENCY RESPONSE: 4Hz – 28kHz +/- 1db
3-BAND BAXANDALL EQ PER CHANNEL: Bass 180hz -26db to +15dB, Mid 900hz +/-12dB, Top 5khz +/-12db
CHANNEL GAIN: -18db – +16db
NOISE: -98dB Ave.
DISTORTION: < 0.05% THD+noise @1kHz
CROSSTALK: < -90dB between channels 1& 2
HEADPHONE AMP: 900mw into16 ohm. 30 – 120 ohm recommended
CHANNEL METER: Peak reading 5 LED -18, -10, -4, 0, +4db
MAIN METERS: Main Meters -20dB to +9dB LED CLIP: +9 db
RECORD OUT MINI JACK – 0db impedance 47k – Direct valve, fixed output.
AC MAINS: 110 & 240V AC @ 50-60hz
FUSE RATING: 100-250v T600ma
DIMENSIONS: 330mm x 220mm x 80mm
VALVE: JRP 5760/ 396a / 2c51 dual triode, triple silver mica. recommended change every 10.000 hours


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